Phonograph-sound-box connection.



0. s. BURTON.

PHONOGRAPH SOUND BOX CONNECTION. APPLICATION FILED NOV. 13, 19w.-

Patented. Nov. 20, 1917.

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PHUNOGRAPI-LSGUND-BOX CONNECTIQN.

implication filed November. 15., 131:3.

T0 015 whom it may concern:

Be it known that 1, CHARLES- BEEETON, a citizen the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented new useful Improvements in Phonograph-Sound-Box Connections, of which the following is a specification, reference being had to the accompanying drawings, forming a. part thereof.

The purpose of this invention is to provide an improved connection between the sound box and the tone arm of phonograph, adapted to permit swiveling of the two connected parts for adjustment of the sound box to two positions, and particularly adapted to permit such adjustment for adapting to zig-zag and hill-andvale records, the specific purpose being to insure the adjustment from one position to the other being made completely and not halted with the parts at an intermediate position. It consists in the elements and features of construction shown and described, as indicated in the claims.

In the drawings:'

Figure 1 is a sideelevation of a portion of the tone arm and sound box embodying this invention in one of its forms.

Fig. 2 is a section axial with respect to the two inter-telescoping and swiveled memhere.

Fig. 3 is a detail side elevation showing the two parts at a diflerent adjustment from that shown in Fi 1.

Fig. 4 is a si'e elevation of a modified form, the parts being broken away and shown in am'al section.

Fig. 5 is a detail section at the line, 5-5, on Fig. 4b.

Fig. 6 is a detail section at the line, 66, on Fig. l.

Fig. 7 is a view similar to Fig. 3, showing a modified form.

lln the drawings the free end of the swim,- ing tone arm, 1, has an elbow, 2, whose angle is about 185 so that the terminal, 3, trends downward at a slope of about s5 for inter-telescoping connection with the similarly inclined terminal member, 5-, of the elbow, l, which leads into the center of the sound box, 6. The two members, 3 and 5, inter-telescoping and swiveled to each other form a joint at which swiveling action occurs to permit the sound box to be turned from a position at which the stylus, '3', may

Specification oi Letters Eater it.

Patents .l Nov, it'll Serial 136.5%7.

cooperate properly with a laterallyaindulattype of record, a position it J cooperate proper a with a at which vertically-undulr of record. The two nieinbc connected together for this a by stud, 9, projecting 'roni one oi: them (for conv n nce oi il ition, here shown ier one l engaging a groove slot, other member, said groove or slot cireumierentially about 90 de grees, and having; at one end a longitudin iveling z nally and preferably slightly obliquely oil" notch, 11, into which the stud may pass for engagement against reverse rotation 01" the swiveledparts. In the form shown in Figs. 1 and 2, the inter-telescoping and swiveled. members, 3 and 5, are relatively dimensioned so as to form a chamber, 8, at their inter-telescoped ends, in which there is coiled about the inner one a spring, 14, having one end engaged with each of said inter-telescoped members, said spring being so coiled and tensioned as to react both aXially and circumferentially upon the two members with which it is engaged, the axial action being preferably by expansion of the spring longitudinally,that is, the spring being normally compressed, and the circumferential action being in the direction for normally holding the stud, 9, at the end of the slot, 10 opposite that which has the notch, 11. fireferably the slot in its circum ferential extent is slightly oblique so that the two ends of the slot,that is, the end of the notch at one end and the other end of the slot without the notch,are in the same directly trans-axial plane; that is to say,

the slot is slightly spiralor inclined to the ting or hill-and wde type its tion,-that is, in the position which adapts the sound box for cooperation with the other type of record from that with which it cooperates in the first or normal position.

A modified form, preferable on some ac mamas counts, is shown in Figs. i and 5, in which wgitudinally toward each other, and the end there is provided a stem, 15, extending ZLXlally through the two inter-telescoped members and engaging with said members at their elbow ends, respectively, the stem being rigid with one of said members at one of said elbows,-as illustrated at the elbow, 2, of the tone arm, and protruding through the elbow, 4, of the other member, the spring, 15, being coiled around the protruding end portion oi said stem and engaged at one end therewith, and at the other end with the elbow member through which it protrudes. In this construction the spring is tcnsioned. as in the other construction, namely, so that it reacts circumferentially for holding the stud at the end of the slot opposite that which has the notch and 1ongitudinally for holding the stud engaged{ with the notch. A convenient method of effecting the connection and securement oi? the spring in this form is that illustrated wherein the end of the stem 15, which protrudes through the elbow, 4, adjacent to the sound box is squared, and a washer, 16, having a square aperture for engaging the squared stem has a pin-hole aperture, 16, for engaging the end of the spring, which being thus engaged therewith may be tensioned to any desired amount as by twist of about half a turn before the washer is passed onto the squared end of the stem, thereby giving the spring the desired initial tension, the washer being retained on the stem by the nut, 17, screwed onto the thread ed terminal of the stem provided beyond the squared portion.

A second modification is shown in Fig. 7, In this form the spring member, 20, is made of spring wire having a coiled portion, 20, intermediate the end portions, 20*, and 20. The elbow members, 2 and i, have in alinement with each other exterior bosses, 21 and 22, respectively, and the elbows are pierced at the center of the bosses which are counterbored and interiorly threaded, and have notches, 21 and 22, respectively, cut through from the counterbore. The end portions, 20, 20, of the spring member, 20, are originally made long enough to protrude beyond the elbows, as seen in dotted line in Fig. 7 and the parts are assembled by inserting one end of the spring member into one of the elbowmembers, as, for example, the member, 4, the end of the spring being passed out through the pierced boss and the end bent down through the notch 22; the other elbow r t her is then telescoped into connection oh the first, the opposite end of the spring of the spring member is then bent down in the notch, 21, and the excess clipped oil. The elbow member, 4:, is now rotated one turn, more or less, to bring the screw hole for receiving the pin, 9, into View at the slot, 10, and the screw is then inserted in place, the rotation of said elbow member for thus registering the hole with the slot being suli'icient to give the spring the necessary torsional tension to insure the pin, 9, being thrown to the end of the slot having the notch 11, as in the other form. Screws 23, 23, may be screwed into the threaded bosses, 21 and 22, respectively, merely to close the same and prevent accidental disengagement of the spring engaged with the notches. The counterboring and threading and provision of the screws in these bosses may be dispensed with if desired.

To prevent vibration of the spring member, 20, a piece of felt, 25, may be inserted into the coils, as shown.

I claim z- 1. In a phonograph in combination, a sound box, a tone arm and tubular connection from the sound box to the tone arm, comprising two intentelescoping swiveled members, one on the tone arm and the other on the sound box; a coiled spring engaged for both axial and circumferential reaction between said inter-telescoped members, said members having one a groove or slot and the other a stud engaged therewith, said groove or slot extending circumferentially, comprising a longitudinally-offset notch at one end, the spring being circumferentialiy and axially tcnsioned for biasing the stud longitudinally in the direction of said notch and circumferentially toward the other end of the slot or groove.

2. In a phonograph in combination, a sound box, a tone arm and tubular connection from the sound box to the tone arm, comprising two inter-telescoping swiveled members, one or: the tone arm and the other on the sound box; a coiled spring engaged for both axial and circumferential reaction between said inter-tclescoped members, said members haying one a groove or slot and the other a stud engaged therewith, said groove or slot extending circumiorcntially, comprising a longitudinally-offset notch at one end, the spring being circumfcrentially and axially tensioned for biasing the stud longitudinally in the direction of said notch and circumferentially toward the other end of the slot or groove, one of said inter-telescoped members having an axial stem, said spring being coiled around said stem and engaged at one end therewith, and at the other end with the other member.

3. In a phonograph in combination, a

sound box, a tone arm and tubular connection from the sound box to thetone armcomprising two inter telescoping swiveied members, one on the tone arm and the other on the sound box; a coiled SPI'IHE' engegmi :tor bqth' axle and cireumrerentloi reaction between, said nter-teleseoped'members, said; members hevlng one a groove or slot end the other a stud engaged therewith, se-ici groove or slot extending circumterentieiiy, comprising a iongitudinally-ofi'set noteh oi; one end, the spring' being circnmferen'tie-iiy end axially tensioned for biasing the semi longitudinally in the direction of mini notch and oironmferentieliy toward v the, other end.

of the "slotor groove, said inter-teieseoped -membe1s each having an elbow one at its connection with the sound box, omit the other at its connection 'With the tone; arm, end o stem exiei with respect to said members secured rigidly at one of soi elbows end. extending out through the other, the spring being'coiled around the nrotruoiing end of said spring and; having one end secured to the stem and the ot or to the member through which the stern protrudes L In a phonogreph, in comhinotion sound box, a tone arm onri tnhuier eonneo tion from the sound he); to the tone ornn, comprising two inter-telescoping swiveied or slot extending eircurnierentieily and norm 7 prising longitudinally-onset notch et enoi the spring; being cireumierentioii? one axially tensloneoi for blesin the stud .tongitudineii r 1n the direction of sslci notoi'i onoi circnmferentieiiy toward the other enci. oi?

slot or groove, sold -mter-teiesoopetii members honing each on elbow, one at its eomleotion with the sound hon and the other at its connection with the tone arm, and to stem axial with respect to said members, end at one end non-rotetably connect ed with one oi them, the'spring being corn hineri with said stem by connection there-- With for relative non'-rototion at one end; 05: the spring; and being conneeteri at the other end with the other eihow.

In 'teetirnonv whereof, Ti hove hereunto set my on Chicago, iiiinois, this 10th eiey of ii'omeniioer i loo 

